CN216148183U

CN216148183U - Rotatable snare

Info

Publication number: CN216148183U
Application number: CN202121619731.6U
Authority: CN
Inventors: 杨虢文
Original assignee: Suzhou Langtesi Medicial Technology Co ltd
Current assignee: Suzhou Langtesi Medicial Technology Co ltd
Priority date: 2021-07-16
Filing date: 2021-07-16
Publication date: 2022-04-01
Anticipated expiration: 2031-07-16

Abstract

The utility model provides a rotatable snare, the middle part of its handle is equipped with a spacing waist shape hole along its radial direction, the propelling movement is provided with first fixed through hole and second fixed through hole on hand, the propelling movement handle includes a positioning bolt, positioning bolt's both ends are respectively through first fixed through hole and second fixed through hole fixed connection to the propelling movement handle on hand, the snare is when using, along with promoting the front and back slip of handle, positioning bolt is synchronous slip in spacing waist shape hole, positioning bolt's one end is equipped with the mounting hole, be equipped with the circular telegram plug in the mounting hole, positioning bolt is equipped with a centre bore and this centre bore and mounting hole intercommunication along the extending direction of handle, the rear end of its cable passes the portion of controlling in proper order, the handle front end, positioning bolt's centre bore, the rear end of cable is equipped with a indent, the bottom formation cooperation of indent and circular telegram plug.

Description

Rotatable snare

Technical Field

The utility model relates to the field of minimally invasive surgical instruments, in particular to a rotatable endoscope snare.

Background

In recent years, with the development of medical instruments and the progress of operation technology, the application of endoscopic gastrointestinal tract surgery is more and more extensive. Wherein, the endoscope snare is one of the endoscope electric cutting instruments with the earliest application time and the widest application range.

The snares are mainly divided into two types, one is electrified snares, and the other is non-electrified mechanical snares. The snare can complete the excision of different parts of raised lesion, pedicle lesion and flat lesion, and even the excision of digestive tract early cancer (such as EMR, MBM and the like). In addition, the snare can also be used in other scenes with similar operation principles, such as a gastrolith lithotriptor, a tuck net for taking out foreign matters, an auxiliary ultra-fine endoscope entering the biliary tract for observation and treatment, and a basket and an 'emergency lithotriptor' for ERCP (endoscopic retrograde cholangiopancreatography).

The snare usually includes a loop at the front end of operation, a pushing handle and a handle at the back end of operation, if the snare can be powered on, a power-on plug is arranged on the pushing handle for connecting a power supply, the loop is connected with the pushing handle through a pull rope, the pushing handle is connected on the handle in a sliding way, the loop can be controlled to extend out of the outer sheath tube by pushing the pushing handle forwards, and when the pushing handle is pulled back, the loop is synchronously retracted into the outer sheath tube. In the endoscopic surgery process, if the ferrule at the front end of the operation and the lesion tissue to be cut are not in the same operation plane, the snare needs to be integrally rotated, and the whole snare needs to be operated through an endoscope pipeline, so that the operation is very inconvenient in the integral rotation.

Disclosure of Invention

The utility model provides a rotatable snare, and aims to solve the problems that an existing snare is inconvenient to rotate and low in accuracy during operation.

In order to achieve the purpose, the utility model adopts the technical scheme that:

a rotatable snare comprises a loop, a pull rope, an outer sheath tube, a pushing handle and a handle, wherein the loop and the front end of the pull rope are fixedly connected by taking the using state of the snare as reference, the outer sheath tube is sleeved outside the pull rope, and the handle is rod-shaped; the propelling movement handle is for smooth massive, slides and locates on the handle, its characterized in that:

the middle part of the handle is provided with a limit long hole along the axial direction of the handle, and the limit long hole penetrates through the radial direction of the handle; the pushing handle is provided with a first fixing through hole and a second fixing through hole, the first fixing through hole and the second fixing through hole are correspondingly arranged on two sides of the limiting long hole, the pushing handle comprises a positioning bolt, and the positioning bolt penetrates through the first fixing through hole, the limiting long hole and the second fixing through hole and is fixedly connected with the pushing handle; when the snare is used, the positioning bolt synchronously slides in the limiting long hole along with the forward and backward sliding of the pushing handle, one end of the positioning bolt is provided with a mounting hole, an electrified plug is arranged in the mounting hole, the positioning bolt is provided with a center hole along the extending direction of the handle, and the center hole is communicated with the mounting hole;

the front end of the handle is provided with a holding part, the holding part is connected with the front end of the handle in a rotating mode in the axial direction of the handle, the front end of the handle is provided with a through hole, the through hole in the front end of the handle is communicated with the limiting long hole, the rear end of the inhaul cable sequentially penetrates through the holding part, the through hole in the front end of the handle and the central hole of the positioning bolt from the front end to the rear end, a pressure groove is formed in the rear end of the inhaul cable, and the pressure groove and the tail end of the power-on plug form conductive matching.

Preferably, the front end of the handle is provided with a circle of grooves along the outer circumference thereof, the holding part is provided with a circle of protrusions along the inner circumference thereof, and the holding part and the front end of the handle are connected in a clamping manner through the grooves and the protrusions.

Preferably, the rear end of the handle is provided with a round handle.

Preferably, the outer ends of the first fixing through hole and the second fixing through hole are provided with hole covers.

Preferably, the ferrule is oval, circular or crescent-shaped.

Preferably, a plurality of positioning salient points are arranged on the inhaul cable at the front side of the pressure groove, and the radius of the minimum circumcircle formed by each positioning salient point is larger than the inner diameter of the central hole.

The design principle and the advantages of the utility model are as follows:

1. according to the utility model, the positioning bolt is arranged on the pushing handle, the positioning bolt is provided with the central hole and the electrified plug, and the rear end of the inhaul cable is provided with the pressing groove, so that the inhaul cable is matched with the end part of the electrified plug after penetrating through the central hole; when the adjustable ferrule is used, an operator holds the holding part and rotates the rear end (the round handle) of the handle to adjust the inclination angle of the ferrule accurately and conveniently.

2. Be equipped with the handhole door on first fixed through-hole and second fixed through-hole, reduce the probability that the circular telegram plug damaged.

3. The front end of the pressure groove is provided with a positioning salient point, so that the reliability of synchronous sliding of the inhaul cable is improved when the pushing handle slides forwards.

Drawings

FIG. 1 is a schematic view of a rotatable snare of the present invention;

FIG. 2 is a partial schematic view of a ferrule and cable in accordance with the present invention;

FIG. 3 is an exploded view of the components of a rotatable snare of the present invention;

FIG. 4 is an enlarged view of the components of the push handle of the present invention;

FIG. 5 is an enlarged view of a portion of the positioning bolt and indent of the present invention;

FIG. 6 is an enlarged view of a portion of the positioning bolt and the indent of the present invention after assembly;

fig. 7 is an enlarged view of fig. 6 at a.

In the above drawings: 1. a ferrule; 2. a cable; 21. pressing a groove; 211. positioning the salient points; 3. an outer sheath tube; 4. pushing the handle; 41. a first fixing through hole; 42. a second fixing through hole; 43. positioning the bolt; 431. mounting holes; 432. a power-on plug; 433. a central bore; 44. an orifice cover; 5. a handle; 51. limiting long holes; 6. a holding part.

Detailed Description

The utility model is further described with reference to the following figures and examples:

example (b): rotatable snare

As shown in fig. 1-7, a rotatable snare comprises a loop 1, a pull cable 2, an outer sheath tube 3, a pushing handle 4 and a handle 5 (see fig. 1), wherein the loop 1 is fixedly connected with the front end of the pull cable 2 with reference to the using state of the snare, the outer sheath tube 3 is sleeved outside the pull cable 2 (see fig. 2), and the handle 5 is rod-shaped; propelling movement handle 4 is for sliding block shape, slides and locates on handle 5, its characterized in that:

a long limiting hole 51 (see fig. 3) is formed in the middle of the handle 5 along the axial direction of the handle, and the long limiting hole 51 penetrates through the handle 5 in the radial direction; the pushing handle 4 is provided with a first fixing through hole 41 and a second fixing through hole 42, the first fixing through hole 41 and the second fixing through hole 42 are correspondingly arranged on two sides of the limiting long hole 51, the pushing handle 4 comprises a positioning bolt 43, and the positioning bolt 43 passes through the first fixing through hole 41, the limiting long hole 51 and the second fixing through hole 42 and is fixedly connected with the pushing handle 4 (see fig. 4); when the snare is used, along with the forward and backward sliding of the pushing handle 4, the positioning bolt 43 synchronously slides in the limiting long hole 51, one end of the positioning bolt 43 is provided with an installation hole 431, an electrified plug 432 is arranged in the installation hole 431, the positioning bolt 43 is provided with a center hole 433 along the extension direction of the handle 5, and the center hole 433 is communicated with the installation hole 431;

the front end of the handle 5 is provided with a holding part 6, the holding part 6 is connected with the front end of the handle 5 in a rotating manner around the axial direction of the handle 5, the front end of the handle 5 is provided with a through hole, the through hole at the front end of the handle 5 is communicated with the limit long hole 51, the rear end of the inhaul cable 2 sequentially passes through the holding part 6, the through hole at the front end of the handle 5 and the central hole 433 of the positioning bolt 43 from front to back, the rear end of the inhaul cable 2 is provided with a pressing groove 21, and the pressing groove 21 and the tail end of the power-on plug 432 form a conductive fit (see fig. 5-7).

The front end of the handle 5 is provided with a circle of grooves along the outer circumference, the holding part 6 is provided with a circle of bulges along the inner circumference, and the holding part 6 and the front end of the handle 5 are connected in a clamping way through the grooves and the bulges.

The rear end of the handle 5 is provided with a round handle.

And the outer ends of the first fixing through hole 41 and the second fixing through hole 42 are provided with hole covers 44.

The ferrule 1 is oval, round and crescent.

A plurality of positioning salient points 211 are arranged on the front side of the pressing groove 21 on the inhaul cable 2, and the radius of the minimum circumcircle formed by each positioning salient point 211 is larger than the inner diameter of the central hole 433 (see fig. 7).

The front end of the pressing groove 21 is coated with a layer of protective layer material, so that a positioning salient point 211 which winds the inhaul cable for one circle is formed.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. A rotatable snare comprises a loop (1), a pull cable (2), an outer sheath tube (3), a pushing handle (4) and a handle (5), wherein the loop (1) is fixedly connected with the front end of the pull cable (2) by taking the using state of the snare as reference, the outer sheath tube (3) is sleeved outside the pull cable (2), and the handle (5) is rod-shaped; propelling movement handle (4) are the slider form, slide and locate on handle (5), its characterized in that:

the middle part of the handle (5) is provided with a limiting long hole (51) along the axial direction of the handle, and the limiting long hole (51) penetrates through the radial direction of the handle (5); the pushing handle (4) is provided with a first fixing through hole (41) and a second fixing through hole (42), the first fixing through hole (41) and the second fixing through hole (42) are correspondingly arranged on two sides of the limiting long hole (51), the pushing handle (4) comprises a positioning bolt (43), and the positioning bolt (43) penetrates through the first fixing through hole (41), the limiting long hole (51) and the second fixing through hole (42) and is fixedly connected with the pushing handle (4) relatively; when the snare is used, along with the forward and backward sliding of the pushing handle (4), the positioning bolt (43) synchronously slides in the limiting long hole (51), one end of the positioning bolt (43) is provided with an installation hole (431), a power-on plug (432) is arranged in the installation hole (431), the positioning bolt (43) is provided with a center hole (433) along the extending direction of the handle (5), and the center hole (433) is communicated with the installation hole (431);

the front end of the handle (5) is provided with a holding part (6), the holding part (6) is rotatably connected with the front end of the handle (5) in the axial direction around the handle (5), the front end of the handle (5) is provided with a through hole, the through hole at the front end of the handle (5) is communicated with the limit long hole (51), the rear end of the inhaul cable (2) sequentially penetrates through the holding part (6), the through hole at the front end of the handle (5) and the center hole (433) of the positioning bolt (43) from the front to the rear, the rear end of the inhaul cable (2) is provided with a pressing groove (21), and the pressing groove (21) and the tail end of the electrified plug (432) form conductive matching.

2. A snare according to claim 1, wherein: the front end of the handle (5) is provided with a circle of grooves along the outer circumference, the holding part (6) is provided with a circle of bulges along the inner circumference, and the holding part (6) is connected with the front end of the handle (5) in a clamping way through the grooves and the bulges.

3. A snare according to claim 1, wherein: the rear end of the handle (5) is provided with a round handle.

4. A snare according to claim 1, wherein: and the outer ends of the first fixing through hole (41) and the second fixing through hole (42) are provided with hole covers (44).

5. A snare according to claim 1, wherein: the ferrule (1) is oval, round and crescent.

6. A snare according to claim 1, wherein: a plurality of positioning salient points (211) are arranged on the front side of the pressure groove (21) on the inhaul cable (2), and the radius of the minimum circumcircle formed by each positioning salient point (211) is larger than the inner diameter of the central hole (433).